title: Stability of core-shell magnetite nanoparticles.
abstract: In the paper, we present three different types of magnetite nanoparticles which were prepared from co-percipitation of iron (II) and (III) chlorides in aqueous solution with and without SiO2 and from thermal decomposition of iron (III) acetylacetonate in nonaqeous solutions. The obtained core-shell nanoparticles were tested in respect of their stability in distilled water, 10% acetic acid, 0.01 M citric acid, 0.9% NaCl and commercial white wine (12% of alcohol). Changes of the nanoparticles were examined by infrared spectroscopy, atomic absorption spectroscopy, transmission electron microscopy, X-ray diffraction and differential scanning calorimetry methods. Modification of magnetic properties was measured by Mössbauer spectroscopy.
authors.affiliation: Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399 Bialystok, Poland. Electronic address: kalska@uwb.edu.pl.
authors.forename: B
authors.initials: B
authors.lastname: Kalska-Szostko
authors.affiliation: Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399 Bialystok, Poland.
authors.forename: U
authors.initials: U
authors.lastname: Wykowska
authors.affiliation: Faculty of Physics, University of Bialystok, Lipowa 41, 15-424 Bialystok, Poland.
authors.forename: D
authors.initials: D
authors.lastname: Satuła
authors.affiliation: Institute of Chemistry, University of Bialystok, Hurtowa 1, 15-399 Bialystok, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Zambrzycka
mesh_terms: D005290:Ferric Compounds / Q000737:chemistry; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission
chemical_list: D005290:Ferric Compounds; D058185:Magnetite Nanoparticles
keywords: Magnetic nanoparticles; Mössbauer spectroscopy; Nanoparticles stability